a) Acceleration vs. time b) Position vs. time (Be very careful to depict whether the graph is linear, concave up, or concave down.)

4. Swims across Lake Erie are officially sanctioned by the Lake Erie Open Water Swimming Association. Your friend on the swim team wants to swim across the lake. The plan is that your friend will swim to Presque Isle starting at a location at Long Point, Ontario which is 24 miles due north of Presque Isle. You will be navigating a boat with a GPS. Your friend can maintain a speed of 1.80 mph in still water. All during the swim you observe that objects drifting in the water are moving at 0.70 mph to the east due to the current. a. What bearing should you maintain? That is what direction should you point the boat to reach Presque Isle? Give your answer relative to a compass direction (i.e., 30° north of west). Hint, you want your net velocity vector to be straight south. b. How long did it take your friend to swim across Lake Erie? c. What is the addition amount of time that your friend will need to swim compared to if there was no current (assume your friend swims at a constant rate)?

1. Draw a qualitative motion diagram (including both velocity and acceleration vectors) for the following objects in the following situations: Be sure to show the vector subtraction that supports how you got your acceleration vectors. a) Viewed from above, a car traveling around a traffic circle having radius R at constant speed. b) A person in a perfectly circular roller coaster loop-de loop having radius R. (Note: higher speed at the bottom of the loop than the top)

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4) While Prof. K. was stuck in airport over break, she saw someone riding a Modobag (the world's first motorized carry-on luggage) and immediately ordered one off Amazon. Once it got delivered, she took it for a test ride up the hill between the Student Union and the football stadium. Prof. K. started traveling with an unknown initial velocity and came to a complete stop after 25 ft. a) Clearly draw coordinate systems for Prof. K. travelling up the hill. Write out the necessary transformation arrays. b) Draw an FBD and IRD for the system. c) Rolling friction is a function of normal force, just like regular friction would be, therefore Frolling=Crr*N. Develop a symbolic equation for the friction force, Frolling, of the bag in terms of the other forces on the FBD (i.e. develop an expression for "N") d) The coefficient of rolling resistance, Crr between the wheels and the ground is equal to 0.0295. The combined weight of Prof. K. an her packed Modobag is 180 Ibs. and the angle 0 = 15°.…

QUESTION 6 Explain how I could go on a 4 mile hike and have a displacement of zero? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).

After Physics Lab, a student undergoes displacements (moves) -60 m East +20 m North. a. What was the magnitude and angle for their total displacement?

Jill's dog Sparky runs 20.0 m northeast to a tree, then 10.0 m west to a second tree, and finally 10.0 south to a third tree. Draw a picture and establish a coordinate system. Calculate the y component (in m) of Sparky's net displacement.  x component (in m) of Sparky's net displacement = 4.14 m

A sedan travels down and up the valley shown above. Identify the correct pair of velocity and acceleration vectors corresponding to the vehicle at the moment it is at the bottom of the valley. O A +a V O B. + V xid-1916614_1.jpg OC. + V Dxid-1916613_1.jpg OD.

A circular racetrack has a radius of 500 m. What is the displacement of a bicyclist when she travels around the track from the north side to the south side? When she makes one complete circle around the track? Explain.